Cohorte-herald

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** Enhancements
* Multicast discovery : adding "format version" and "node uid" to the heartbeat paquet
* Multicast discovery : new configuration option to avoid discovering local peers (of same node)

** Bug Fix
* Using a Http Service Availability Checker component to determin the right Http Service port[82]

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** New Features
* Choosing to which group the service will be exported [19]
* Added the Python EventAPI bridge project

** Enhancements
* Better message handling in HeraldDiscovery (RPC) [commit/522855f05d15a7c01634771c930c3d488a023c2a]

** Bug Fix
* Solve the "TTL reached" issue [isandlaTech/cohorte-herald/pull/26]
* Minor fix to the 3-phase handshake in Java [isandlaTech/cohorte-herald/pull/24]
* When an error occurs during post, don't pop associated event [isandlaTech/cohorte-herald6b08455]
* Avoid handling reply messages on HeraldRPCExporter

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** New Features
* Herald Remote Shell: open a shell session on another peer (experimental)

** Improvements
* New Message format encapsulating headers and metadata
* Herald unlocks send() calls when the target peer is unregistered.
It also calls the errback of post() calls.

** Bug Fix
* Fixing synchronisation problem: XMPP transport blocked on
``_on_disconnected`` (isandlaTech/cohorte-herald/issues/14).